Propagating /32 from OSPF to BGP

Michael Ludvig mludvig at logix.net.nz
Thu Jun 20 07:30:38 CEST 2013


On 19/06/13 13:08, Simon Dickhoven wrote:

> Is it possible that your ISP is accepting "le 32" on their BGP
> session with GW_2 (and that's the one they checked when you asked
> them to verify) but only "le 31" on their BGP session with GW_1?

That was indeed that the case! They insisted they've got it correctly
but I kept pushing until they fixed their filter. All works now.

On 19/06/13 23:32, Ondrej Zajicek wrote:

> The solution would be to propagate IGP metric as BGP MED attribute
> (and ensure that ISP do not ignore this attribute). If you are sure
> that ospf_metric2 is the same, you could do that simply by using
> 'bgp_med = ospf_metric1;' for routes from OSPF in BGP export
> filters.

Yes that's what I do. Didn't mention it in my first email, sorry.

Thanks guys

Michael



More information about the Bird-users mailing list